DISINFECT POOL AND SPA WATER➡ With these stabilised chlorine tablets maintain a healthy swimming/bathing environment ELIMINATE HARMFUL BACTERIA & ORGANISMS➡ Your spa or swimming pool water stays clean, hygienic and healthy SLOW RELEASE➡ chlorine tablets will slowly erode over 3-5 days for long-lasting application. Also, It is easy to store for later usage. EASY TO USE➡ included with the granules help you select the correct amount to apply for the desired increase in chlorine level. To help ensure your water chlorine level stays between 1-3 mg/litre (ppm) for pools and 3-5 mg/Litre (ppm) for hot tubs PACKAGE INCLUDES➡ 2 Kg Chlorine tablets suitable for all hot tub spas and swimming pools. Supplied 100 x 20g Tablets in a container.